The North American PlayStation Store gets a dose of downloadable content from some very big games today, starting with the latest map pack for Guerrilla Games' Killzone 3.

Joining the new "From the Ashes" map pack is new add-on content for Castlevania: Lords of Shadow, L.A. Noire and Mortal Kombat. Those digital goods help pump up a relatively slower week of game releases, with the sole new downloadable game for the PlayStation 3 represented by Alien Zombie Mega Death, an arcade-style shooter borne of a PSP mini.

Read on for the full list of new additions for the North American PlayStation Store and deals for PlayStation Plus subscribers.